/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
int i,j,k;
int n=0;
char a[]={'z','x','c','v','b','n','m'};
for(i=0;i<7;i++){
for(j=0;j<7;j++){
if(i==j&&j<6) j++;
for(k=0;k<7;k++){
if(k==i&&k<6) k++;
if(k==j&&k<6) k++;
System.
out.
printf("%c%c%c%c%c%c\n", a
[i
],a
[i
],a
[j
],a
[j
],a
[k
],a
[k
]); n++;
}
}
}
}
}
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